WHAT ARE THE CRACKS IN THE CORNER OF MY MOUTH?

So, you have really painful cracks on the corner of your mouth. The corners of your mouth are red, swollen and cracked. And they hurt – like really hurt. It hurts to talk, smile, eat and oh, jeez, you’ll do anything to keep from yawning! Is it from the cold? Is it from chapped lips? And why doesn’t lip balm help?

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